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OpenAdvisories
High ALAS2-2026-3321 2 CVEs

Important: bind security update (Amazon Linux 2)

Published May 25, 2026 · Updated Jun 8, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-5946: An unauthenticated remote attacker can crash any affected named instance with a single crafted DNS message, causing denial of service. Both authoritative servers and resolvers are affected. CVE-2026-3039: Fix GSS-API resource leak

Fixed packages 17

ReleasePackageFixed in
Amazon Linux · 2 bind 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-chroot 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-debuginfo 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-devel 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-export-devel 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-export-libs 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-libs 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-libs-lite 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-license 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-lite-devel 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-pkcs11 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-pkcs11-devel 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-pkcs11-libs 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-pkcs11-utils 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-sdb 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-sdb-chroot 32:9.11.4-26.P2.amzn2.13.15
Amazon Linux · 2 bind-utils 32:9.11.4-26.P2.amzn2.13.15

Vulnerabilities 2

  • High 7.5
    CVE-2026-3039

    BIND 9 server memory exhaustion during GSS-API TKEY negotiation

    BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integr…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine
  • High 7.5
    CVE-2026-5946

    Invalid handling of CLASS != IN

    Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafte…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-3039.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-5946.html